-
the angle between the leaf and stem
axil
-
lateral buds may remain dormant but they are the source of __________
branches
-
epidermal cells that elongate into hairs
trichomes
-
plant leaves and young stems are protected by this non-cellular coating
cuticle
-
the upper leaf surface usually facing the growing stem is positionally _________, while the lower surface is the __________
- adaxial; close to stem
- abaxial; away from stem
-
the edge of the leaf
margin
-
in typical leaves, most stomata are usually on the __________ surface
abaxial
-
leaves ca have three parts. The main foliar area is called the ___________; the stalk, if present, is its _________; and any leafy tissue that grows on or along the stem is the_______
-
Cells through which sugars are transported must be alive. These ________ cells ("zombie") lack nuclei at maturity, and are managed by adjacent _________ cells
- sieve cells
- companion cells
-
the two principle types of water conducting cells are _________ and __________ the wood of most flowering trees have both kinds but pines and other conifers have only _______
- tracheids
- vessel elements
- tracheids
-
bands of living cells that provide connectivity into he wood of a tree, passing through annual rings are called _________
rays
-
three slices (sections) that anatomists use to study wood structure are the....
- cross section
- radial section
- tangential section
-
the _______ section allow best study of how rings form also allows you to look down into cells
cross section
-
if you are looking at the full length of water conduction cells and also seeing a side view of rays: __________ section
radial section
-
in this _______ section you see the full length of water conduction cells, but you only see an end view of rays
tangential section
-
Many plant parts are strengthened or protected by thickened cells that die when mature and functional (sealing themselves off from by impregnating their thickened cell walls with impervious compounds). These ________ are common in wood and vascular bundles.
fibers
-
Plant growing tips make new stem and leaves, something we call __________ growth.
primary growth
-
Wood is the aggregate xylem tissue made through _____________ growth.
secondary growth
-
The remarkable and crucial cell layer that generates wood is the ________________,
cambium
-
A tree branch grows longer and a tree taller through ___________ growth.
primary growth
-
Trees produce leaves through ______________ growth.
primary growth
-
A leaf and lateral bud define a zone along the stem called a ______.
node
-
The section of stem between points where two sequential leaves are attached is called the _____________.
internode
-
The character and quality of how a side branch joins to a main stem is called its attachment. At that juncture, the side branch is noticeably thicker, defining a zone called the _____________. When removing the branch, we are cautioned to leave that thickened zone intact, cutting the branch once it has narrowed.
collar
-
We understand now that a tree trunk can often wall off damaged and diseased sectors, a process we call ___________________.
compartmentalization
-
The four basic flower parts, from outside to inside, are: (a)________, (b)_________, (c)__________, and (d.)__________.
- sepals
- petals
- stamens
- pistils
-
Trees that are __________ produce separate male and female flowers (or cones) on the same individual plant.
monoecious
-
Trees that male flowers (or cones) on one individual and female flowers (or cones) on a separate plant are ______________.
dioecious
-
In flowering plants, seed form inside (a)______________. In conifers, seed form in (b)_____________.
- a. pistil, fruit, ovary, carpel
- b. cone
-
When pollen arrives/lands on a stigma, we call that (a)________________. When the sperm nucleus generated by the pollen unites with the egg nucleus, we call that (b)________________.
- a. pollination
- b. fertilization
-
To a botanist, each part of a flower is equivalent to a _________.
leaf
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